I have a solution that should keep everyone happy. The answer is for those whose real talent appears to be lip synching, to leave the music world to those who actually want to really sing, and retraining as lip speakers. Lip speakers, unlike lip synchers, are usful members of the community who accompany non-signing Deaf people to lectures, public meetings etc where the speaker may be too far away to lipread, or frequently changes, and relay the speech with clear lip pattern to the Deaf person.